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On 12 January, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1974 - Part one of Invasion of the Dinosaurs was first broadcast on BBC1.
- 1974 - Part five of the TV Comic story The Amateur was first published.
- 1980 - Part four of The Horns of Nimon was first broadcast on BBC1, concluding Season 17 prematurely.
- 1982 - Part four of Castrovalva was first broadcast on BBC1.
- 1983 - Part four of Arc of Infinity was first broadcast on BBC1.
- 1984 - Part three of Warriors of the Deep was first broadcast on BBC1.
- 1984 - DWM 85 was first released by Marvel Comics.
- 1984 - The novelisation of Mawdryn Undead was first released by Target Books.
- 1985 - Part two of Attack of the Cybermen was first broadcast on BBC1.
- 1989 - DWM 145 was first released by Marvel Comics.
- 2010 - The complete Hornets' Nest was released for the first time together in one CD box set.
- 2011 - DWDVDF 53 was first published by GE Fabbri Ltd.
- 2012 - DWA 251 was first released by Immediate Media Company London Limited.
- 2012 - DWM 443 was first released by Panini Comics.
- 2016 - Wave of Destruction was first released by Big Finish Productions.
- 2017 - DWM 508 was first released by Panini Comics.
- 2017 - DWFC 89 was first released by Eaglemoss Collections.
- 2020 - Orphan 55 was first broadcast on BBC One.
- 2022 - Watchers was first released by Big Finish.
- 2023 - Friend of the Family was first released by Big Finish.